Automatic braking mechanism for the feed roller of wire drawing machines



Sept. 14 1926. 1,599,455

J. G. BRUYERE AUTOMATIC BRAKINQMECHANISM FOR THE FEED ROLLER OF WIRE DRAWING MACHINES Filed Feb. 20,, 1926 Patented Sept. 14, 1926.

PATENT orries.

JOANNY GABRIEL nnuynnnon LYON, FRANCE.

AUTOMATIC BRAKING MECHANISM FOR T'HEFEED nonnnn on wins DR W NG ACHINE-s.

Application filed February 1926', Serial No. 88,636, and in France Marches, 1925.

This invention relates'to automatic braking mechanism for the feed roller of wire drawing machines. 1 I

According to the invention the wire on emerging from the dies passes under a roller mounted on one end of a bell crank lever and tensioned either by the weight thereof or by a spring, the pivoting of the bell crank lever should the wire break either in front of or behind the dies applying a brake which stops the rotation of the feed drum.

lVaste is thus avoided and. the risk of deterioration of the dies due to the irregular passage of the wire is diminished and the entanglement of the severed ends in the press is avoided. I

he invention will be described with reference to the accompanying drawings.

Fig. 1 is a side elevation.

Fig. 2 is an end elevation.

Fig? 3 is a diagrammatic elevation showingthe position of the parts when a break Fig. 4; is a diagrammatic end elevation the over atable 0 and then between the dies d of a rolling mill which draws it into a wire 6, being finally wound on to a drum f.

According to the invention on emerging from the rollers the drawn wire passes round a roller 9 carried by one of the arms of a bell crank lever it freely pivoted on a rod 2' and afiixed by a spring j to the frame, then over a stationary roller is and a fixed roller Z and is finally rolled on ma drum The second arm of the bellcrank lever h is affixed throughthe rod m to the end of a lever 71 pivoted on a bracket 0 and against which the brake operating rod 1) is held by the spring (1.

A lever r pivoted at s is pivoted to the other end of the rod p, the lever r'being formed with an eye t in which a finger a mounted on a shaft '21 engages during the spring 8 which tends to turn the shaft in the direction of the arrow 00.

The feed drum 6 is screwed onto a shaft 3 which is of conical shape to accommodate drums of varying diameters andhold them securely. At the right hand side of the brake shoe to a brake drum 2 is mounted on the shaft y which rotates in a fixed bearing 2 and an adjustable bearing 3 mounted. on pedestals 4;. In order to ensure a suitable feed the shaft y is continually braked by a shoe 5 bearing on the drum 2 the pressure being ad uStable by means of a screw 6.

If the drawn wire 6 or the wire a breaks at any 'point the lever 72, which is held in the raised position by the drawn wire 6, is I 6 and the rollers (Z these latter hold the length of wire between them and the point a of breakage; when this has passed they rotate empty.

If the breakage occurs between the roller (Z and the drum 7 the stoppage of the drum Z) since the rollers d continually rotate, places a great tension on the wire a which therefore breaks between the drum 6 and the rollers and the first case has again taken place. l i

The waste is therefore-reduced to a mini:

mum since as soon as the breakage occurs no more wire is unwound.) This eliminates the risk of entanglement of the severed ends of the wire in the machine and deterioration of the dies of the drawing press by irregular passage of the wire.

What I claim, as my invention and .desire v to protect by Letters Patent is l. Autoinat-icbraking mechanism for the feed roller of wire drawing machines com-.

prising in combination a bell crank lever pivoted to the frame, a roller mounted on about its centre to the frame, one end of I said rocking lever being pivotally connected. to said rod a spring loaded transverse shaft, a finger projecting therefrom to engage'a'n eyelet in theupper end of the rocking leve'n a brake shoe on the transverse shaft and a bralge drurn onthe feed roller engeged thereby on the rotation ofthetransvere shaft.

'A'Litoinatiebraking inec ilni sin for the feed roller of Wire drawing machines Co nprising in cornbinati'oifa bell? rhik'lir'i pivoted to the frame, a roller mounted on onetir'ni of tl i e'be li b rtnk l e Ver underw the Wire passes, a spring connected between the :1 &1 b ll zcren e reni the frame; rod vomny" 'onn'ected to the secondern; of-hthe bell era-n1; ,1eyer, a leyerp iii-wee t t ei' ie fie e d #9 t e ener. en li seid rod a spring loaded rod engaged by the lever it rocking" lever pivoted about its centre to the frame, one end of said rocking lever being pivotally connect-ed to said rod, 1:

loaded transverse shaft, a finger projeeting therefrom to engage an eyelet in the pper 'end' of the rocking lever, a brake shoe on the transverse shaft and a brake drum on the feed roller engaged thereby onth-e rotation of the transverse shaft.

In. witne ee whereof I effix my signature.

JQA NY G I L BRUY R 

